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Table 2 Comparison of clinical features by mean duration from symptom onset to hospitalization

From: Clinical significance of Mycoplasma pneumoniae specific IgM titer in children hospitalized with Mycoplasma pneumoniae pneumonia

Variables, mean ± SD or n (%)

Within 6 days from symptom onset to hospitalization

More than 7 days from symptom onset to hospitalization

P value

n

83

71

NA

Male, n (%)

44/83 (53.0)

31/71 (43.7)

0.247

Age at diagnosis of MP pneumonia, years

6.1 ± 4.2

5.9 ± 3.4

0.757

Total duration of fever during the illness, days

5.2 ± 7.6

9.1 ± 4.6

< 0.001

Total hospitalization duration, days

9.0 ± 5.3

10.1 ± 5.3

0.200

Development of any extra-pulmonary symptoms, n (%)

10/83 (12.0)

26/71 (36.6)

< 0.001

Pleural effusion, yes, n (%)

9/83 (10.8)

16/71 (22.5)

0.050

Oxygen need, yes, n (%)

4/83 (4.8)

6/71 (8.5)

0.362

Respiratory virus co-infection, yes, n (%)

30/83 (36.1)

35/71 (49.3)

0.100

Positive results on pneumobacter PCR except MP, n (%)

13/32 (40.6)

14/41 (34.1)

0.569

Macrolide resistant MP, n (%)

58/80 (72.5)

59/66 (89.4)

0.011

Response to stepwise treatment for MP pneumonia, n (%)

0.657

 Good response

34/83 (41.0)

24/71 (33.8)

 

 Poor response

49/83 (59.0)

47/71 (66.2)

 

Severity of pneumonia based on chest radiography

0.089

 Mild

12/83 (14.5)

6/71 (8.5)

 

 Moderate

57/83 (68.7)

43/71 (60.6)

 

 Severe

14/83 (16.9)

22/71 (31.0)

 
  1. MP: Mycoplasma pneumoniae; n: number; NA: not applicable; PCR: polymerase chain reaction; SD: standard deviation